Rosenlundsskogen Nature Reserve

Stora Vika is a locality situated in Nynäshamn Municipality, Stockholm County, Sweden with 651 inhabitants in 2010.

Sorunda is a locality situated in Nynäshamn Municipality, Stockholm County, Sweden with 1,307 inhabitants in 2010. It is the hometown of Ulla Akselson, Moa Martinsson, and Harry Martinsson.

Lidatorp and Klövsta (Lidatorp och Klövsta) is a locality situated in Nynäshamn Municipality, Stockholm County, Sweden with 340 inhabitants in 2010.

Draget Canal (Swedish: Dragets kanal) is a Swedish canal in the municipality of Nynäshamn, county of Stockholm and province of Södermanland. Together with other natural channels, it provides a route between the ports of Nynäshamn and Södertälje avoiding the requirement to pass offshore of Landsort, although today it is only used by leisure craft.

Nynäshamn is a station on Stockholm's commuter train network, located in Nynäshamn within Nynäshamn Municipality and is the terminus for the Nynäs Line. On a normal winter weekday, the station has about 900 boarders (2015). The station has three tracks, which end with stop buffers. Entrance to the platform is geographically from the north (the track runs in a half loop through the city and ends in the "wrong" direction). The station no longer has an entrance building or ticket hall, but has weather protection on the platform. Nynäshamn is used as a transfer to the Destination Gotland ferries to the island of Gotland.

Ösmo (Swedish pronunciation: [ˈœ̂sːmʊ]) is a locality situated in Nynäshamn Municipality, Stockholm County, Sweden with 3,911 inhabitants in 2010. It has a station on the Stockholm commuter rail network, Nynäshamn line (Nynäsbanan).

Oaxen (Swedish pronunciation: [ˈûːˌaksɛn]) is an island and rural locality in Södertälje Municipality, Stockholm County, Sweden. Oaxen has rich deposits of limestone which have been mined since the 19th century. The island is connected to the mainland with car cable ferry. The island is mostly famous for Oaxens Skärgårdskrog which was a luxurious restaurant that used to be located on Oaxen before moving to Djurgården, Stockholm.

Ösmo station is a railway station on the Nynäs Line of Stockholm's commuter rail network, located in the urban area of Ösmo in the municipality of Nynäshamn in Stockholm County. As of 2019, on a normal winter weekday, the station has approximately 1,300 boarding passengers. The station is located on the single-track Hemfosa-Nynäshamn section of the line, and lacks ticket barriers. The journey time from Ösmo to Stockholm City Station is approximately 45 minutes.

Gröndalsviken is a station on Stockholm's commuter rail network, located in the Estö/Gröndal district of central Nynäshamn, 62.4 km from Stockholm Central Station and 1.5 km from Nynäshamn station along the Nynäs Line. The station opened on 18 August 2008, replacing the former station at Nynäs havsbad, approximately 800 meters away. The station consists of a single side platform along a single track and lacks a ticket hall or fare gates. The area surrounding Gröndalsviken includes a park-and-ride facility. As of 2015, the station had approximately 700 boardings per weekday. Along with Bålsta, it is one of the only commuter rail stations in Stockholm with a single track.

Södertörn is a roughly triangular peninsula and artificial island in eastern Södermanland, Sweden, with an area of 1,207 km² and is bordered by: Lake Mälaren, the Hammarby Canal and the inlet of Saltsjön (a part of the Baltic Sea) to the north, The Baltic Sea (the Stockholm Archipelago) to the east and the south, Himmerfjärden and Hallsfjärden (parts of the Baltic Sea) to the west as well as The Södertälje Canal to the northwest. The Södertälje Canal and Hammarby Canal are man-made waterways, so the peninsula of Södertörn is not fully separated from (the rest of) the Swedish mainland or the island of Södermalm by nature, although Södertörn is classified as an island by Statistics Sweden, and the third largest island in Sweden. Since 2005, the whole of Södertörn has been included in Metropolitan Stockholm. Before that, the southern parts of the island, which lie within Nynäshamn Municipality, and the western parts, which are in Södertälje Municipality, were – although in Stockholm County – not included in the metropolitan area. The northern areas of Södertörn are to a large extent made up of rift valley countryside (and urban areas) with high ground which is either pine forest or bare. The long valleys of the south become level ground. The waters surrounding the area are either freshwater or brackish water with poor salinity. The bedrock is almost entirely gneiss. The highest point on Södertörn is Tornberget in Haninge at 110.9 metres (363.8 feet) above sea level. It is located in Hanveden, a large area of largely coniferous forest south of Stockholm, whose eastern areas partially form the Tyresta National Park. The southernmost parts of Södertörn were connected to Stockholm in 1901, when the Nynäs Line was opened. The railway runs between Nynäshamn in the south and Älvsjö in the north, where it joins with the main southern railway.

Nynäsgård is a station on Stockholm's commuter rail network, located 60.6 km from Stockholm Central Station and 3.3 km from Nynäshamn station on the Nynäs Line. The station has two side platforms and no ticket barriers. As of 2015, the station had approximately 1,000 boardings per weekday.

Järflotta is an island in Stockholm archipelago, approximately 5 km (3.1 miles) south of Nynäshamn. Once separated from the mainland by a natural sound, this navigable route was rendered unusable in more modern times by post-glacial rebound and has been replaced by the artificial Draget Canal. The island is a nature reserve.